package com.dfbz.utils;

import java.util.HashMap;

public class XBHashMap extends HashMap {
    /**
     * 如果搜索框为空 就设置为“”
     * @param key
     * @return
     */
    @Override
    public Object get(Object key) {
        Object obj= super.get(key);
        return obj==null?"":obj;
    }
}
